I've given myself a few nice deep cuts. have yet to have stiches, and only one has been looked at by a doc. Mind you though, I have a medical family. about 3/4 are nurses or aids. I also have my emerg first aid, cpr-b, and experience.
I stabbed myself in the thigh at my last job, have to find the date again(made a post about it when it happened, over on the spyderco.com forum). about 1/2" of tip(in, not wide) from my spyderco millie. missed everything, despite hitting in the centre of my thigh(near groin). Should have gotten stitches, but it wasn't too bad(just a bit open for 2-3 weeks). Just lived with it, nothing on it. bled about 2hrs that night, as I was forced to walk at work. closed but couldn't clot 100%. just leaking.
The one that I had looked at was when I sliced my thumb on an airvent at work. fixing it and it fell. went to the doc and about 30-45min after the cut I was seen. he moved it open to look, and just put butterfly tension strips over it, and gave me 2 weeks off work(maintanence with chemicals). emerg training had me treat it correctly when it occured. Bled out under a luke-warm tap, about 5 min, then wrapped it in a rough papertowel, placing the flap of skin over the wound to clot back on. then reported it to a manager when it was slowed(almost stopped) bleeding. bled about 30min total. that was late 01.
have a nice scar down the outside of my right index, thumb side. dumb accident back in 99. no feeling on the side of my finger. was down to the bone. again bled out & cleaned, wrapped, and kept dry.
that said, I have a rather high pain tolerance, and don't get queezy easily. the only one so far was the thigh, and that made me want to throw up and faint, but I had to take care of it. Didn't even see what kind of damage I had done till the next day when I had a shower while it was clotted.